CVE-2026-78333

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The 12 Step Meeting List WordPress plugin before 3.19.17 does not sanitise and escape a value submitted by unauthenticated users before storing it in its activity log and outputting it back in an admin area page, leading to a Stored Cross-Site Scripting issue which could be used against high privilege users such as admin.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

August 27, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 27, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

12 Step Meeting List 3.17 – 3.19.16 – Unauthenticated Stored XSS via Geocode Event Log | CVE 2026-78333 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/27de9242-d60e-42e8-a3a5-e355bfc00393/

Vendor Advisories for CVE-2026-78333(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 18× in last 7d / 18× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 19:15 UTCGHSA enrichment
  3. 2026-08-29 07:08 UTCEG score recompute
  4. 2026-08-29 07:08 UTCGHSA enrichment
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-28 19:04 UTCGHSA enrichment
  7. 2026-08-28 17:44 UTCGHSA enrichment
  8. 2026-08-28 05:33 UTCEG score recompute
  9. 2026-08-28 05:33 UTCGHSA enrichment
  10. 2026-08-27 17:28 UTCGHSA enrichment
  11. 2026-08-27 16:50 UTCEG score recompute▲ 8.80
  12. 2026-08-27 16:50 UTCGHSA enrichment
  13. 2026-08-27 16:43 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  14. 2026-08-27 14:25 UTCEPSS rescore
  15. 2026-08-27 06:31 UTCGHSA enrichment
  16. 2026-08-27 06:17 UTCNVD update
  17. 2026-08-27 06:15 UTCEG score recompute
  18. 2026-08-27 06:11 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78333?
CVE-2026-78333 is a high vulnerability published on August 27, 2026. The 12 Step Meeting List WordPress plugin before 3.19.17 does not sanitise and escape a value submitted by unauthenticated users before storing it in its activity log and outputting it back in an admin area page, leading to a Stored Cross-Site Scripting issue which could be used against high…
When was CVE-2026-78333 disclosed?
CVE-2026-78333 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78333 actively exploited?
CVE-2026-78333 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 80.4% of all scored CVEs.
What is the CVSS score of CVE-2026-78333?
CVE-2026-78333 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-78333?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78333, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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